Maybe more constructive than just banning would be to approach a solution together with the initial developer. Honoring his innovative approach and eventually granting him temporarily a slight advantage in exchange for bringing his innovative idea to the ecosystem instead of just playing copycat...
The brightness control that apps have now is a result of exactly this kind of process.
Only thing "unfavorable" about the way Apple acts exists in the perception of people who already have an axe to grind.